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Statuts:Enquête Officielle
Date:samedi 17 décembre 1955
Heure:20:40
Type/Sous-type:Silhouette image of generic C46 model; specific model in this crash may look slightly different
Curtiss C-46F Commando
Compagnie:Riddle Airlines
Immatriculation: N9904F
Numéro de série: 30262
Année de Fabrication: 1944
Moteurs: 2 Pratt & Whitney R-2800-75
Equipage:victimes: 2 / à bord: 2
Passagers:victimes: 0 / à bord: 0
Total:victimes: 2 / à bord: 2
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:près de Hollywood, SC (   Etats-Unis d'Amérique)
Phase de vol: En vol (ENR)
Nature:Cargo
Aéroport de départ:Wilmington-New Hanover County Airport, NC (ILM/KILM), Etats-Unis d'Amérique
Aéroport de destination:Jacksonville-Thomas Cole Imeson Municipal Airport, FL, Etats-Unis d'Amérique
Détails:
The aircraft was engaged on a scheduled cargo flight from New York to Miami, Florida, with scheduled stops at Wilmington, North Carolina and Jacksonville, Florida. Flying on a VFR flight plan the aircraft landed at Wilmington at 18:57 and departed again at 19:36, estimating Jacksonville at 21:56. At approximately 20:40, at a point near Hollywood, South Carolina, engines were heard by witnesses and lights were seen descending on an erratic path as the aircraft fell in several pieces to the ground.

The aircraft was manufactured for and operated by the U.S. Air Force as a C-46A, and was decommissioned and stored in the Egyptian desert. Subsequently an Italian firm bought the aircraft, and the Curtiss-Wright company authorised this firm to convert C.46A's to C-46E's, and provided them with an incomplete set of drawings relative to this conversion, which is identical to that for the C-46F insofar as the tail surfaces arc concerned. Where specified material was not available the nearest available material was used. In every case the strength of the material in the new part exceeded the strength of the material specified. Many of the newly installed parts were heavier than the original parts.
A comparison of the rudder elevators, their tabs and their control mechanisms on the accident aircraft with applicable Curtiss-Wright drawings disclosed many nonconformities.

Probable Cause:

PROBABLE CAUSE: "An in-flight structural failure resulting from a violent pitch-down induced by the erratic action of nonconforming elevator tab controls."



Photos

photo of Curtiss-C-46A-Commando-N9904F
wreckage distribution chart
 

Plan
Ce plan montre l'aéroport de départ ainsi que la supposée destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Wilmington-New Hanover County Airport, NC et Jacksonville-Thomas Cole Imeson Municipal Airport, FL est de 550 km (344 miles).

Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tel qu'ils sont connus à ce jour.
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